scholarly journals Arable Weeds and Management in Europe

2020 ◽  
Vol 1 ◽  
pp. 169-170
Author(s):  
Jana Bürger ◽  
Helen Metcalfe ◽  
Christoph von Redwitz ◽  
Alicia Cirujeda ◽  
Silvia Fogliatto ◽  
...  
Keyword(s):  
Weed Management ◽  
Scientific Community ◽  
Large Scale ◽  
Vegetation Period ◽  
Research Society ◽  
Plant Taxonomy ◽  
Full Data ◽  
Arable Weeds ◽  
Arable Fields ◽  
Share Data

“Arable Weeds and Management in Europe” is a collection of weed vegetation records from arable fields in Europe, initiated within the Working Group Weeds and Biodiversity of the European Weed Research Society (EWRS). Vegetation-plot data from this scientific community was not previously contributed to databases. We aim to prove the usefulness of collection for large scale studies through some first analyses. We hope to assure other weed scientists who have signalled willingness to share data, and plan to construct a full data base, making the data available for easy sharing. Presently, the collection has over 60,000 records, taken between 1996 and 2015. Many more studies for potential inclusion exist. Data originate mostly from studies exploring the effect of agricultural management on weed vegetation. The database is accompanied with extensive meta-data on crop and weed management on the surveyed fields. The criteria for inclusion were a minimum amount of information on the cultivated crop, and a georeference. Most fields were surveyed repeatedly, i.e. transects, multiple random plots, or repeated visits. All surveys aimed to record the complete vegetation on the plots. Sometimes, taxa were identified only to genus level, due to survey dates very early in the vegetation period. Plant taxonomy is standardized to the Euro+Med PlantBase.

scholarly journals The OpenRadiation project: monitoring radioactivity in the environment by and for the citizens

2019 ◽  
Vol 54 (4) ◽  
pp. 241-246 ◽  
Author(s):  
J.F. Bottollier-Depois ◽  
E. Allain ◽  
G. Baumont ◽  
N. Berthelot ◽  
G. Darley ◽  
...  
Keyword(s):  
Emergency Management ◽  
Dose Rate ◽  
Scientific Community ◽  
Emergency Situation ◽  
Collaborative Approach ◽  
Fukushima Accident ◽  
The Public ◽  
Collaborative Tools ◽  
Share Data ◽  
Project Monitoring

After the Fukushima accident, initiatives emerged offering the public the possibility to realise measurements of the radioactivity in the environment with various devices and to share data and experiences through collaborative tools. The objective of the OpenRadiation project is to offer the public the opportunity to perform measurements of the radioactivity using connected dosimeters on smartphones. The challenge is to operate such a system on a sustainable basis in normal situations and in order to be useful in an emergency situation. In normal situations, this project is based on a collaborative approach including pedagogical activities. In case of emergency situation, data from the field will be available in “real time” providing an opportunity for the emergency management and the communication with the public. The practical objectives are to develop i) a website centralising measurements using various dosimeters, providing dose rate maps with raw and filtered data and offering dedicated areas for specific projects and exchanges about data and ii) a dosimetric app using a connected dosimeter. This project is conducted within a partnership between organisms’ representative of the scientific community and associations to create links with the public.

scholarly journals Data Communities: Empowering Researcher-Driven Data Sharing in the Sciences

1970 ◽  
Vol 15 (1) ◽  
pp. 7
Author(s):  
Rebecca Springer ◽  
Danielle Cooper
Keyword(s):  
Data Sharing ◽  
Large Scale ◽  
Data Repository ◽  
Disciplinary Boundaries ◽  
Success Stories ◽  
Scholarly Communications ◽  
Information Technologists ◽  
Share Data ◽  
Technological Intervention ◽  
Informal Groups

There is a growing perception that science can progress more quickly, more innovatively, and more rigorously when researchers share data with each other. However many scientists are not engaging in data sharing and remain skeptical of its relevance to their work. As organizations and initiatives designed to promote STEM data sharing multiply – within, across, and outside academic institutions – there is a pressing need to decide strategically on the best ways to move forward. In this paper, we propose a new mechanism for conceptualizing and supporting STEM research data sharing.. Successful data sharing happens within data communities, formal or informal groups of scholars who share a certain type of data with each other, regardless of disciplinary boundaries. Drawing on the findings of four large-scale qualitative studies of research practices conducted by Ithaka S+R, as well as the scholarly literature, we identify what constitutes a data community and outline its most important features by studying three success stories, investigating the circumstances under which intensive data sharing is already happening. We contend that stakeholders who wish to promote data sharing – librarians, information technologists, scholarly communications professionals, and research funders, to name a few – should work to identify and empower emergent data communities. These are groups of scholars for whom a relatively straightforward technological intervention, usually the establishment of a data repository, could kickstart the growth of a more active data sharing culture. We conclude by offering recommendations for ways forward.

scholarly journals Reply to “Missed opportunities in large scale comparison of QSAR and conformal prediction methods and their applications in drug discovery”

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Nicolas Bosc ◽  
Francis Atkinson ◽  
Eloy Félix ◽  
Anna Gaulton ◽  
Anne Hersey ◽  
...  
Keyword(s):  
Drug Discovery ◽  
Scientific Community ◽  
Large Scale ◽  
Prediction Methods ◽  
Missed Opportunities ◽  
Conformal Prediction ◽  
Letter To The Editor ◽  
Published Paper

Abstract In response to Krstajic’s letter to the editor concerning our published paper, we here take the opportunity to reply, to re-iterate that no errors in our work were identified, to provide further details, and to re-emphasise the outputs of our study. Moreover, we highlight that all of the data are freely available for the wider scientific community (including the aforementioned correspondent) to undertake follow-on studies and comparisons.

scholarly journals Weed diversity is driven by complex interplay between multi-scale dispersal and local filtering

2020 ◽  
Vol 287 (1930) ◽  
pp. 20201118 ◽  
Author(s):  
Bérenger Bourgeois ◽  
Sabrina Gaba ◽  
Christine Plumejeaud ◽  
Vincent Bretagnolle
Keyword(s):  
Field Margins ◽  
Multi Scale ◽  
Arable Weeds ◽  
Crop Type ◽  
Arable Fields ◽  
Weed Diversity ◽  
Biodiversity Maintenance ◽  
Weed Dynamics ◽  
Filtering Effect ◽  
Local Dispersal

Arable weeds are key organisms for biodiversity maintenance and ecosystem service provision in agroecosystems. Disentangling the drivers of weed diversity is critical to counteract the global decline of farmland biodiversity. Even if distinct scale-dependent processes were alternatively proposed, no general framework unifying the multi-scale drivers of weed dynamics has yet emerged. Here, we investigate the joint effects of field- and landscape-scale processes on weed assemblages in 444 arable fields. First, field margins sheltered greater weed diversity than field core, evidencing their role as biodiversity refugia. Second, community similarity between field core and margin decreased with the distance to margin, highlighting a major role of local dispersal. Third, weed diversity at field margins increased with organic field cover in the landscape, pointing out massive regional dispersal. Fourth, while both local and landscape dispersal explained up to 41% of field core weed diversity, crop type strongly modulated their strength, depicting an intense filtering effect by agricultural management. This study sheds new light on the complex multi-scale interactions shaping weed diversity, field margins playing a key role by strengthening regional dispersal and sustaining local dispersal. Land-sharing strategies improving habitat heterogeneity both locally and regionally should largely promote agroecosystem multifunctionality and sustainability.

scholarly journals Ionized gas in the NGC 5253 supernebula: high spatial and spectral resolution observations with the JVLA and TEXES

2020 ◽  
Vol 497 (2) ◽  
pp. 1675-1683
Author(s):  
Sara C Beck ◽  
John Lacy ◽  
Jean Turner ◽  
Hauyu Baobab Liu ◽  
Thomas Greathouse ◽  
...  
Keyword(s):  
Spectral Resolution ◽  
Large Scale ◽  
Massive Star ◽  
Dwarf Galaxy ◽  
Data Cube ◽  
Test Case ◽  
Echelle Spectrograph ◽  
Full Data ◽  
Ionized Gas ◽  
Very Large Array

ABSTRACT The youngest, closest, and most compact embedded massive star cluster known excites the supernebula in the nearby dwarf galaxy NGC 5253. It is a crucial target and test case for studying the birth and evolution of the most massive star clusters. We present observations of the ionized gas in this source with high spatial and spectral resolution. The data include continuum images of free–free emission with ≈0.15 arcsec resolution made with the Karl G. Jansky Very Large Array (JVLA) at 15, 22, and 33 GHz, and a full data cube of the [S iv] 10.5 μm  fine-structure emission line with ≈4.5 km s−1 velocity resolution and 0.3 arcsec beam, obtained with the Texas Echelon Cross Echelle Spectrograph (TEXES) on Gemini North. We find that (1) the ionized gas extends out from the cluster in arms or jets, and (2) the ionized gas comprises two components offset both spatially and in velocity. We discuss mechanisms that may have created the observed velocity field; possibilities include large-scale jets or a subcluster falling on to the main source.

Biological farming for sustainable agricultural production

1995 ◽  
Vol 35 (7) ◽  
pp. 849 ◽  
Author(s):  
CM Penfold ◽  
MS Miyan ◽  
TG Reeves ◽  
IT Grierson
Keyword(s):  
Weed Management ◽  
Environmental Sustainability ◽  
Large Scale ◽  
Farming Systems ◽  
Available Phosphorus ◽  
Economic Returns ◽  
Soil P ◽  
Soil Available Phosphorus ◽  
Term Trial ◽  
Biological Farming

In 1989, funding was provided to establish a large-scale (16-ha), long-term trial at Roseworthy campus. The trial aims to compare organic, biodynamic, integrated, and conventional broadacre farming systems for attributes of sustainability. It is overseen by a 13-member management committee comprising farmers with experience in each practice, agronomists, and soil scientists. Through the monitoring of indicators such as soil physical, chemical, and biological changes, product quality, economics, crop water usage, and energy requirements, the comparative advantages or disadvantages of each system are being evaluated in terms of productivity, profitability, and environmental sustainability. After 6 years, significant differences between systems are apparent in economic returns and soil available phosphorus (P) levels. The biodynamic treatment has the highest gross margins, followed by conventional, organic, and integrated. Conversely, available P levels on the biodynamic and organic treatments have declined 12 and 9%, respectively, since the start of the trial, while both the integrated and conventional treatments have increased soil P levels. In summary, it is too early in the trial to state categorically that any one system is more sustainable than another, although trends are now emerging. Weed management remains the main impediment to high production levels on the organic and biodynamic treatments, while input costs, variable yields, and low returns for grazed pastures are major constraints to high economic returns on the integrated and conventional systems.

Changes in Herbicide Use Patterns and Production Practices Resulting from Glyphosate-Resistant Crops

2006 ◽  
Vol 20 (2) ◽  
pp. 301-307 ◽  
Author(s):  
Bryan G. Young
Keyword(s):  
Weed Management ◽  
Management Strategy ◽  
Crop Production ◽  
Large Scale ◽  
Resistance Management ◽  
Use Patterns ◽  
No Till ◽  
Production Practices ◽  
Sites Of Action ◽  
Herbicide Use

Recent shifts in herbicide use patterns can be attributed to rapid, large-scale adoption of glyphosate-resistant soybean and cotton. A dramatic increase in glyphosate use is the most obvious change associated with the adoption of glyphosate-resistant crops. Consequently, the diversity of herbicides used for weed management in these crops has declined, particularly in soybean. To date, the availability of glyphosate-resistant corn has limited the use of glyphosate in corn. While exploiting the benefits of glyphosate-resistant crops, many growers have abandoned the principles of sound weed and herbicide-resistance management. Instead of incorporating glyphosate into a resistance management strategy utilizing multiple herbicide sites of action, many growers rely exclusively upon glyphosate for weed control. Although it is difficult to establish a clear relationship between the adoption of glyphosate-resistant crops and changes in other crop production practices, the increase in no-till and strip-till production of cotton and soybean between 1995 and 2002 may have been facilitated by glyphosate-resistant crops.

scholarly journals Combined effect of crop rotation and carabid beetles on weed dynamics in arable fields

2020 ◽  
Author(s):  
Reto Schmucki ◽  
David A. Bohan ◽  
Michael J.O. Pocock
Keyword(s):  
Ecosystem Services ◽  
Weed Control ◽  
Crop Rotation ◽  
Weed Management ◽  
Agricultural Landscapes ◽  
Predation Pressure ◽  
Carabid Beetles ◽  
Arable Fields ◽  
Seed Eating ◽  
Weed Dynamics

AbstractWeed management is a resource-intensive practice in arable agriculture, with direct and long-term impacts on both productivity and biodiversity (e.g. plant, pollinators and farmland wildlife). In conventional systems, weed control relies on crop management and herbicide inputs, but for more sustainable production systems, use of herbicides needs to be reduced. This requires a good understanding of the processes that regulate arable weed dynamics in arable fields.We adopted a systems framework to understand and model interacting components that drive the weed dynamics in 168 arable fields. Within this framework, we built a structural equation model (SEM) to quantify the direct and indirect effects of crop rotation (i.e. crops in the previous three years and the current year) and carabid beetles (Coleoptera: Carabidae) on weed density, seed abundance and accumulation in the seedbank. We included results from a mechanistic approach to infer interactions between seed-feeding carabid beetles and seeds to estimate predation pressure in each field.Our results show that weeds in arable fields are regulated by crop type, sowing season, and activity density of carabid beetles. We found a direct effect of crop rotation, including both past and current field management practice, on weed abundance in the field and its seedbank. There was also an indirect effect of crops on weed seed accumulation in the seedbank via the effect of seed-eating carabid beetles. The efficiency of weed control by carabid beetles depended on the cumulative predation pressure, which indicates the importance of functional diversity as well as abundance.Farmers and agronomists can capitalise on the ecosystem services provided by carabid beetles by adapting agronomic practices and crop rotation to maintain a rich fauna of seed-eating carabids in fields and potentially across the agricultural landscapes. When integrated with rotational management practices, this ecosystem services can improve the efficiency of weed management and contribute to the sustainability of cropping systems.

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